Quick answers
- Which hospitals does Michael A. Keller work at?
- Medicare's official clinician data lists Michael A. Keller at 5 hospitals: Baptist Medical Center, CHRISTUS Santa Rosa Medical Center, Methodist Hospital, Methodist Hospital Stone Oak and Westover Hills Baptist Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Michael A. Keller see patients?
- Medicare's clinician data lists 5 practice locations, including San Antonio, TX, Boerne, TX and Jacksonville, TX. Call before your visit to confirm the address.
- What is Michael A. Keller's specialty?
- Medicare lists Colorectal Surgery (Proctology) as the primary specialty.
- Does Michael A. Keller accept Medicare assignment?
- Yes. Medicare's clinician data says Michael A. Keller accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
- Does Michael A. Keller offer telehealth?
- Medicare's clinician data says Michael A. Keller offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Michael A. Keller?
- (210) 245-2000, as listed in official Medicare / NPI Registry data.
- What is Michael A. Keller's NPI number?
- 1659572824. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Michael A. Keller works
Medicare's Facility Affiliation Data lists Michael A. Keller at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Baptist Medical CenterSan Antonio, TX · Acute Care Hospital · CCN 450058
- CHRISTUS Santa Rosa Medical CenterSan Antonio, TX · Acute Care Hospital · CCN 450237
- Methodist HospitalSan Antonio, TX · Acute Care Hospital · CCN 450388
- Methodist Hospital Stone OakSan Antonio, TX · Acute Care Hospital · CCN 670055
- Westover Hills Baptist HospitalSan Antonio, TX · Acute Care Hospital · CCN 670333
Practice locations
Addresses where Michael A. Keller is enrolled with Medicare (CMS data updated 2026-10-02).
- 11130 CHRISTUS Hls, Suite 210San Antonio, TX 78251 (210) 245‑2000
- 124 E Bandera Rd, Suite 301Boerne, TX 78006 (830) 249‑1429
- 2026 S Jackson StJacksonville, TX 75766 (903) 586‑2456
- 7848 Gateway Blvd EEl Paso, TX 79915 (915) 599‑1313
- 7940 Floyd Curl Dr, Suite 1010San Antonio, TX 78229 (210) 614‑0880
Group practices
Medicare enrollment lists Michael A. Keller as a member of this group (CMS data updated 2026-10-02).
- Texas Oncology PA1,014 clinicians in the group
Specialties
Find other Colorectal Surgery (Proctology) doctors in Texas →
Other colorectal surgeons in San Antonio
Clinicians with the same Medicare primary specialty in San Antonio, TX — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2005 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1659572824 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians